docs: def get_now_playing(self):
          """
          Returns the currently playing track, or None if nothing is playing.
          """
  
          params = self._get_params()
          params["limit"] = "1"
  
          doc = self._request(self.ws_prefix + ".getRecentTracks", False, params)
  
          tracks = doc.getElementsByTagName("track")
  
          if len(tracks) == 0:
              return None
  
          e = tracks[0]
  
          if not e.hasAttribute("nowplaying"):
              return None
  
          artist = _extract(e, "artist")
          title = _extract(e, "name")
  
          return Track(artist, title, self.network, self.name)